Work-guide for sewing-machines



F. T. STROBEC'K.

WORK GUIDE FOR SEWING MACHIN ES. APPLICATION FILED JUNE 6,1918.

1,342,775, Patented June 8, 1920. Z SHEETS-SHEET I- Q in? INVENTORWITNESSES CNW W J m 7. m

ATTORNEY F. T. STRUBECK. WORK GUIDE FOR SEWING MACHINES. APPLICATIONFILED JUNE 6,1918.

Patented June 8, 1920.

2 SHEETSSHEET 2.

INVENTOR WITNESSES UNITED STATES PATENT OFFICE.

,FRAZNS T. STRbBECK, OF IBEACHMONT, MASSACHUSETTS, ASSIGNOR TO THESINGER MANUFACTURING COMPANY, A CORPORATION OFv NEW JERSEY.

WORK-GUIDE FOR SEWING-MACHINES.

To all whom it mag concern:

Be it known that I, Frans T. S'rnonnon, a subject of the King of Sweden,residing at Beachniont, in the county of Suffolk and State ofMassachusetts, have invented certain. new and useful Improvements inork- Guides for Sewing-Machines, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention relates to work-guides for sewing machines and has for aprimary object to provide a device for vcontrolling a strip offur-material, either natural or artificial, as it is presented to theneedle of a sewing machine, so that the'fur or pile-fibers will bedeflected or bent over to one side during their approach to'the needle,whereby the stitches will be laid across the bent over baseportions ofthe pile-fibers along, an edge of the fur-strip.

A further object of the invention is to provide a fur-guiding attachmentwhich may be placed in advance of the'presser-foot of an ordinary sewingmachine to bend or deflect the, fur to one side so that the pile-fibersalong an edge of the fur-strip will be bent over transversely of theline of seam-formation and delivered to the presser-foot in such bentover condition.

Vith the above and other objects in view, as will hereinafter appear,the invention has been embodied in a machine having areciprocatingneedle and a rotary looperoperating to enchain the needle-loops with oneanother to form readily raveling stitches. The machine is preferableequipped with a presser-foot feeding mechanism including a four-motionfeed-dog, and a fiat work-sup port; the latter carrying an edge-guideincluding an overhanging lip for controlling the edge of the fur-st fpfarthest away from the stitchingline. f

Operating in conjunction with the foregoing devices is a furguide fordeflecting the fur orpile-fibers to one 'side or toward the edge-guideabove referred to. The furguide' may comprise a sheet-metal stripdisposed in advance of the presser-foot and curved widthwise to catchthe pile-fibers at the edge of the fur-strip adjacent the'stitching lineand gradually bend them over transversely'of the line of feedlas theyare drawn toward the presser-foot, whereby when they reach the upwardland forwardly curved toes of-the presseroot, they will pass underSpecification of Letters Patent.

Patented June 8, 1920.

Application filed June 6, 1918. Serial No. 238,553.

the latter in'a transversely bent condition. The lower edge of thefur-guide is held spaced slightly above the work-supporting plate toallow the marginal portion of the backing strip which supports thepile-fibers to pass under it. This edge of the fur-guide extends in thedirection of feed but is disposed at the side of the line of seam-formaton opposite that at which the edge-guide hes and acts upon thebase-portions of the pile-fibers to keep the opposite edge of thefur-strip in contact with the edge-guide.

When the bent over pile-fibers reach the stitching point, they will lieacross the line of seam-formation and will be basted down to the backingstrip in bent over condition. The presser-foot is formed in its underface with a vertical guiding wall forming substantially a continuationof the lower edge of the curved fur-guiding plate.

- The fur-basting operation above indicated is particularly useful incarrying out a novel process of attaching fur-material to the tops ofhouse-slippers, which process forms the subject matter of my copendingapplication Serial No. 238,554, filed herewith, and is hereinafterbriefly described. The present invention, however, is of general utilityin stitching along the edge of fur-material or pile-fabric wherein itmay be desirable .to

baste down the pile-fibers so that they will lie transversely of boththe needle-path and the line of seam-formation preliminary to furtherstitching operations upon the basted furstrip.

, In the accompanying drawings, Figure 1 is a front elevation of asewing machine embodying the invention. Fig. 2 is a plan view of thecloth-plate of the machine. Fig. 3 is a cross-section along the line3--3, Fig. 2, with a strip of fur-material in position. Fig. 4c is aperspective view of the presserfoot. Fig. 5 is a cross-section of thepresserfoot and throat-plate on the line 5-5, Fig.

2 with the work in position. Fig. 6 is a side elevation of the partsshown in Fig. 2. Figs. 7 to 11, inclusive, illustrate a method ofattachingfur-material to the top ed e of a felt slipper, the carryinginto effect 0? which method the present invention is designed tofacilitate In the preferred embodiment of the invention, as illustrated,the machine frame comprises the base 1 supportin the raised bed 2 fromwhich rises the stan ard 3 carry- 8; the latter operating in conjunctionwith a spring-pressed presser-foot 9 the upwardly above the cloth-plate6' to curved forward extremity of which is bifurcated to form toes l0and 11. The longitudinal half of the presser-foot sole-portion includingthe toe 10 is thickenedas by means of a plate 12 secured to the undersurface of the presser-foot, to form a work-engaging surface 13 disposedbelow the level of the work-engaging surface 14 of the otherlongitudinalhalf of the presser-foot which includes the toe;11.: Thework-engaging surfaces 13 and 14 of the presser foot are thereforestepped in;arrangement and at their juncture a vertical guide-wall 15 isformed extending lengthwise of the presser-foot.

As thep'resent mechanism is intended for a basting operation, themachine is provided with a looper 7 'of the rotary type which cooperateswith the needle 7 in'the usual manner to form readily raveling stitches..i Y Adjustably secured to the cloth-plate 6 by thumb-screws 16 is theedge-guide 17 having an edge-guiding wall 18 parallel to the line'ofseam-formation and an overhanging lip 19 designed to keep the edge ofthe work from riding or curving above or over the wall 18. In bastingfur strips, such as shown at a, Fig. 3, preparatory to attaching them tothe tops of slippers, the guide 17 .is' adjusted so that the distancebetween the free edge of the lip 19 and the guide-wall 15 of thepresser-foot is approximately equal to the width of the pile-formingportion 2 of the fur-strip; it being noticed that thepilesupporting'base 7) of the fur-strip is somewhat wider than the furportion a. To bend the fur away from the needle 7 or toward theedge-guide 17 so that the fur maybe bent transversely of the line ofseamformation and may pass under the toes 11 0f the presser-foot, afur-deflectmg guide 20 is employed. The guide-20 may consist of astripof sheet-material curved widthwise and supported by an archedbracket 21 screwed to. the guide 17. The strip 20 has ailower edge-22which is straight along the major portion'of its length and is spacedslightly for the passage of the, base I) of the fur strip, F 1g. 3. 1Throughout the maj or portion of its length the'lower edge 5220f thefur-guide 20 extends substantially in the direction of feed butv is,disposed ajshort' distance to one side of the vertical plane defined bythe' needlepath 'and the line of seam-formation, in order that the lineof stitches may be formed within;;the;-pile supporting portion of thebacking strip andbinddown the base-portion of the pile-fibers along theedge of the fur-strip. The rearwardlydisposed end of the fur-guide 20 iscurved over somewhat more sharply thanthe forward end and ter- 7 over:condition to the presser foot which holds them .in flattened condition,Fig. 5,

while the needle forms a row of chain stitches .0 serving to bindidownthe pilefiber's in bent over condition. The fur-strip is then reversedand the opposite. edgetbasted inna similarananner; the basted fur-striphaving the pile-fibers a crowded toward the center-as shown in Fig. 8a

Y Onee'dge of;tl1e backing strip 6 of the furmat'erial is next attachedby a line of fasteningstitches d to the edge of a body-fabric e which.may constitute the top of a felt slipper. 7 This operation may beperformed on an ordinary sewingmachine since the bent back pile-fibersare held out of the way of the reciproc'ating'needle of the machine anddo not interfere with theassembling of the edge of the backing strip '7)upon the edge of the body-fabric 6 with the pile-fibers a between theplies b andpe and in contactwith the outer 'or right? side of thebody-fabric e, Fig. 9 i After the stitches cl have been formed, thebacking strip 6 of the fur-material is folded about the stitches cZandthe edge ofthe bodyfabric 6 into the position shown ,in Fig. 10, inwhich position a line i of. fastening stitches f passing; through thebacking strip 1) and body-fabric 6 may be'readily formed by an ordinarysewing machine, the pilefibers being still held bythe basting stitchesout of the way-of the sewing needle. Upon thereafter "raveling orpulling out the basting stitches ,0, the fur expands into therolllikeuform, shown in cross-section, Fig. 11, and provides the:desired finish at the top edge of the body-fabric or the-upperedge ofthe slipper, ffectively,'zconcealirigfthe backin strip and allstitching.

Having thus set forth the .nature of the invention, what I claim, hereinis" ,1. In asewing machine for basting pilefabric, the; combination withsewing mechanism fori formingqa linefof through-andthrough stitches, anda p'resser-foot, of a fur-bending guide located' mainly in advance ofthepresser-foot androperati ng to bend over the. pile-fibers along anedge of the fabric and guide them into contact-relation with the undersurface of the presserfoot, said fur-bending guide being so positionedlaterally with relation to the stitching line that the stitches formedwill bind down the bent over base-portions of the pilefibers whileleaving the remaining portions of the pile-fibers unconfined.

2. In a sewing machine, in combination,

a frame including a work-support, stitchforming mechanism including areciprocating needle and 'complemental loop-taking mechanism supportedat opposite sides of said work-support, four-motion feeding mechanismincluding a feed-dog operating through an aperture in the work-support,a presser-foot opposed to said feed-dog, edgeguiding means disposed atone side of the line of seam-formation for guiding a strip offur-material to the needle, and a fur bending guide disposed alongsideand acting in opposition to said edge-guide to bend the fur transverselyof the direction of feed and guide it under said presser-foot.

3. In a sewing machine, in combination, a frame including awork-support, stitchforming mechanism including a reciprocating needleand complemental loop-taking mechanism supported at opposite sides ofsaid work-support, four-motion feeding mechanism including a feed-clogoperating through an aperture in the work-support, a resser-foot opposedto said feed-dog, edgeguiding means disposed at one side of the line ofseam-formation for guiding a strip of fur-material to the needle, and afurguide in advance of the presser-foot and spaced from saidwork-support for bending the fur transversely of the direction of feedand guiding it under the presser-foot.

4. In a sewing machine, the combination with a reciprocating needle anda presserfoot, of an edge-guide located at one side of the line ofseam-formation, and a fur-guide having a surface-portion at the oppositeside of the line of seam-formation for guiding the base-portions of thepile-fibers at one edge of the fur-strip, said fur-guide havingadditional surface-portions for bending the fur toward said edge-guideand delivering it to the presser-foot in bent over condition, wherebythe stitches will be formed across the bent over base-portions of thepile fibers along the edge of the fur-strip.

5. In a sewing machine, in combination, areciprocating needle, feedingmechanism, a presser-foot having a stepped work-engaging surfaceincluding a vertical guiding wall extending in the direction of feed, anedge-guide opposed to said guiding wall and forming therewith a guidingchannel for reception of a strip of fur-material, and a fur-guide forbending the pile-fibers laterally of the line of seam-formation anddelivering them to the presser-foot in bent over condition across theline of seam-formation.

6. lVork-guiding mechanism for sewing machines comprising, awork-supporting plate, an edge-guide mounted on said worksupportingplate, and an elongated furguiding plate disposed in advance of thepresser-foot and having its lower edge spaced slightly. above said worksupporting plate, said fur-guiding plate being curved widthwise to bendthe pile-fibers of a strip of fur-material laterally of and across theline of seam-formation,

7. lVork-guiding means for sewing machines comprising, a work-supportingplate, an edge-guide mounted on said work-supporting plate, and a furbending guide having a concaved surface opposed to said edgeguide, asand for the purpose specified.

8. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle and a presser-foot, of an edge-guidehaving a guiding portion disposed in advance of said needle, and a furbending guide disposed mainly in advance of said presser-foot and havinga curved side-wall extending alongside of and cooperating with saidedge-guide.

In testimony whereof, I have signed my name to this specification.

FRAN S T. STROBEOK.

